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Properties | Unit | Specific Value | Specific Value |
Main components | — | BN99 | BN99.7 |
Purity | wt-% | >99 | >99.7 |
Density | g/cm 3 | 1.95~2.02 | 1.65~1.75 |
Open Porosity | vol.-% | 8~10 | 20~25 |
Average Size of Crystallites | µm | — | — |
Bending Strength σ m | MPa | 55 | 50 |
Compressive Strength(static) | MPa | — | — |
Young's Modulus | GPa | 24 | 23.8 |
Hardness (Mohs) | — | 2 | 2 |
Maximum Service Temperature (in Air) | °C | 900 | 900 |
Maximum Service Temperature (In Inert gas) | °C | 2100 | 2100 |
Maximum Service Temperature (In Vacuum) | °C | 1900 | 1900 |
Linear Coefficient of Expansion (RT - 1000 °C) | 10 -6 / K | 1.5 | 2 |
Volume Resistivity | Ω * cm | 4.95 * 1015 | 4.75 * 1015 |
Thermal conductivity | W / (m * K) | 55 | 50 |
Specific Heat | J / (kg * K) | 40 | 37 |
Dielectric Strength Typical Colour | Kv/mm — | 28 White | 28 White |











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